Section 2(1)(f) in The Kerala Ground Water (Control and Regulation) Act, 2002
(f)"pumping well" means a well fitted with-pump driven by an electric motor or oil engine for pumping water but does not include open wells fitted with pumps driven by engine or motor of Horse Power upto 1.5 and tube wells, borewells and dug-cum borewells fitted with pumps driven by engine or motor of Horse Power upto 3;